GEM: Development and Decay of Storm-time Ring Current

GEM：风暴时环流的发展和衰减

• 批准号: 0000255
• 负责人: Kazue Takahashi
• 金额: $ 18万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000255&HistoricalAwards=false
• 关键词: GEM; Development; Decay; Storm; time

The investigators will study geomagnetic storm processes in the ring current using ground-based magnetometer measurements and data from satellites such as GOES, AMPTE, and Geotail. The study will focus on the transport and energization of oxygen ions and the excitation of ultra-low frequency waves and their role in ring current decay. The data will be used to determine if there is a one-to-one correspondence between the onset of the storm recovery phase and substorm onset, and to what extent the tail current contributes to mid-latitude geomagnetic indices. Ultra low frequency waves may be related to the decay of ring current ions. The study will contribute to our understanding of Space Weather effects associated with large magnetic storms

研究人员将利用地面磁力计测量数据以及来自 GOES、AMPTE 和 Geotail 等卫星的数据来研究环流中的地磁风暴过程。 该研究将重点关注氧离子的传输和供能以及超低频波的激发及其在环电流衰减中的作用。 这些数据将用于确定风暴恢复阶段的开始与亚暴开始之间是否存在一一对应关系，以及尾流对中纬度地磁指数的贡献程度。 超低频波可能与环流离子的衰变有关。 这项研究将有助于我们了解与大型磁暴相关的空间天气效应